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Finding the Fourth Proportional to 5,290,793.19, 7,922,728.49 and 3,488,207.64

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Solution

The fourth proportional to 5,290,793.19, 7,922,728.49 and 3,488,207.64 is: 5,223,436.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290,793.19 : 7,922,728.49 = 3,488,207.64 : x
  2. Step 2: Convert to fraction form
    5,290,793.19/7,922,728.49 = 3,488,207.64/x
  3. Step 3: Cross multiply
    5,290,793.19x = 7,922,728.49 × 3,488,207.64
  4. Step 4: Simplify right side
    5,290,793.19x = 27,636,122,031,022.63
  5. Step 5: Solve for x
    x = 27,636,122,031,022.63/5,290,793.19
  6. Step 6: Final answer
    x = 5,223,436.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.